This paper provides evidence on the cost of political interference on banks with Chinese Private Enterprise Survey data between 2002 and 2012. Using regional political turnovers as a proxy for political influence, we show that political motivations for future promotions distort the bank lending decisions and crowd out lending to private firms. Besides, firms with business connections are more sensitive to turnover, while political connections are not significantly affected. These lending distortions are more considerable where competition for future promotion is more intense and where incumbents have more influence over banks. Moreover, the effect is especially pronounced for small firms. As a result of reduced bank credit, firms’ total credit availability decreases and they have to cut investments. Overall, our results suggest that preferential lending to politically important sectors has negative spillovers and can lead to costly crowding-out of private sectors.